A5101428174- Photonic and Optical Devices
- Advanced Optical Sensing Technologies
- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Quantum and electron transport phenomena
- Magnetic properties of thin films
- Advanced Fluorescence Microscopy Techniques
- Silicon Nanostructures and Photoluminescence
- Neural Networks and Reservoir Computing
- Magnetic Properties and Synthesis of Ferrites
- Semiconductor Quantum Structures and Devices
- Mechanical and Optical Resonators
- Iron oxide chemistry and applications
- Photorefractive and Nonlinear Optics
- CCD and CMOS Imaging Sensors
- Terahertz technology and applications
- ZnO doping and properties
- Ferroelectric and Piezoelectric Materials
- X-ray Diffraction in Crystallography
- Advanced Memory and Neural Computing
- Semiconductor materials and devices
- Nuclear Physics and Applications
- X-ray Spectroscopy and Fluorescence Analysis
- Ga2O3 and related materials
- Radiation Detection and Scintillator Technologies
University of Chicago
2021-2024
Argonne National Laboratory
2024
Nanjing Tech University
2022
Tsinghua University
2021
Beijing Graphene Institute
2019
Southeast University
2014
The use of trivalent erbium (Er3+), typically embedded as an atomic defect in the solid-state, has widespread adoption a dopant telecommunication devices and shows promise spin-based quantum memory for communication. In particular, its natural telecom C-band optical transition spin-photon interface make it ideal candidate integration into existing fiber networks without need frequency conversion. However, successful scaling requires host material with few intrinsic nuclear spins,...
We perform resonant fluorescence lifetime measurements on a nanocavity-coupled erbium ensemble as function of cavity-laser detuning and pump power. Our reveal an anomalous three-fold suppression the Purcell factor at zero cavity high fluence. capture qualitative aspects this decay rate using Tavis–Cummings model non-interacting spins coupled to common cavity.
One of the most common approaches for quenching single-photon avalanche diodes is to use a passive resistor in series with it. A drawback this approach has been limited recovery speed diodes. High resistance needed quench avalanche, leading slower recharging depletion capacitor. We address issue by replacing fixed bias-dependent adaptive resistive switch. Reversible generation metallic conduction enables switching between low and high states under unipolar bias. As an example, using...
On a self-designed automatic diameter control system, large (6 inch) LiNbO<sub>3</sub> crystals without cracks are successfully grown by choosing suitable temperature gradient, starting composition, and growth parameters with the Czochralski method.
Defects and dopant atoms in solid state materials are a promising platform for realizing single photon sources quantum memories, which the basic building blocks of repeaters needed long distance networks. In particular, trivalent erbium (Er3+) is interest because it couples C-band telecom optical transitions with spin-based memory platform. order to produce at scale required networks imperative integrate these necessary mature scalable semiconductor processes. this work, we demonstrate...
A series of zinc ferrite chains have been synthesized successfully by using the self-assembly method in different synthesizing magnetic fields. The particle are arranged order on Si substrate under assistant field. show various length-to-radius aspect ratio, saturation magnetization Ms, remanent Mr, and coercivity Hc corresponding Using X-ray circular dichroism, Zn substitution mechanism has analyzed discussed.
We perform resonant fluorescence lifetime measurements on a nanocavity-coupled erbium ensemble as function of cavity-laser detuning and pump power. Our reveal an anomalous three-fold suppression the Purcell factor at zero cavity high fluence. capture qualitative aspects this decay rate using Tavis-Cummings model non-interacting spins coupled to common cavity.
In this work, a dynamic metallic filamentary resistive switch (MFRS) is used to quench the avalanche in single photon photodiode (SPAD). The experimental results and simulations are consistent with an interpretation that, MFRS high resistance state when occurs. This enables quenching of sufficiently within short time. increases voltage drop across MFRS, which switches its low on-state recharging process greatly accelerated because lowered R-C time constant. leads sharp pulse shape fast...
Rare earth ions (REIs) have emerged as a promising platform for quantum technology, especially memories – given their long optical and spin coherence times. Along with brief review of progress in the field, we show that doped thin films on silicon can be engineered to approach properties shown bulk REI crystals leverage CMOS nanofabrication methods development integrated devices.